Start by boiling the water in a large pot. Once it comes to a rolling boil, add a generous pinch of salt. Toss in the pasta of your choice and cook according to the package instructions until al dente. Drain the pasta and set it aside.

In a large saucepan, heat the olive oil over medium heat. Add the flour to create a roux. Stir continuously for about two minutes until it forms a light golden color. This step is crucial; it creates a flavorful base for your sauce.

Gradually pour in the whole milk, whisking constantly to avoid lumps.

Allow the mixture to simmer gently. Add in the ricotta and grated gruyère cheese. Continue stirring until the cheeses melt and blend into a creamy sauce. Season with kosher salt, white pepper, onion powder, and freshly grated nutmeg.

In a large mixing bowl, combine the cooked pasta, chopped ham, and the cheese sauce. Toss everything together until well coated. This is where the magic starts!

Preheat your oven to 350°F (175°C). Grease a baking dish with butter. Pour the pasta mixture into the dish, spreading it evenly.

In a small bowl, mix the breadcrumbs with melted butter and thyme. Sprinkle this mixture over the pasta bake to form a crispy topping.

Place the baking dish in the preheated oven and bake for 25-30 minutes or until bubbly and golden brown. Your kitchen will start to fill with a wonderful aroma.

Remove the dish from the oven and let it cool slightly. Serve with a fresh salad or your favorite sides, and enjoy a comforting meal that feels like a warm hug.